зеркало из https://github.com/mozilla/gecko-dev.git
331 строка
10 KiB
C
331 строка
10 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "xp_core.h" //used to make library compile faster on win32 do not ifdef this or it wont work
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#include <memory.h>
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#include <stdio.h>
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#include <malloc.h>
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#include "xp_core.h"/*defines of int32 ect*/
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#include "xpassert.h"
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#include "xp_mcom.h"/*XP_STRDUP command*/
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#include "ntypes.h" /*for mwcontext for callback routines*/
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#include "libcnv.h"
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#include "readbmp.h"
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#include "writejpg.h"
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//#include "writepng.h"
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/*the following 4 includes are for the color quantization wrapper to colorqnt.h*/
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#include "pbmplus.h"
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#include "ppm.h"
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#include "ppmcmap.h"
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#include "colorqnt.h"
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/*accepts a stream of bytes that will be read in and converted to a JPEG/GIF FILE
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jpeg/gif file (default to p_output default) stream that is returned
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: you are responsible for free'ing the returned memory*/
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typedef void * LPVOID;
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CONVERT_IMG_INFO *create_img_info();
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void copy_img_info(CONVERT_IMG_INFO *p_dest,CONVERT_IMG_INFO *p_origin);
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void destroy_img_info(CONVERT_IMG_INFO *p_info);
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void clean_convert_img_array(CONVERT_IMG_ARRAY array,int16 count);
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/*PUBLIC API*/
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convimgenum
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select_file_type (CONVERT_IMGCONTEXT * p_input)
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{
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int16 c;
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if ((c = getc(p_input->m_stream.m_file)) == EOF)
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return conv_unknown;
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if (ungetc(c, p_input->m_stream.m_file) == EOF)
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return conv_unknown;
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switch (c) {
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case 'B':
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p_input->m_imagetype=conv_bmp;
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return conv_bmp;
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default:
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p_input->m_imagetype=conv_unknown;
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return conv_unknown;
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break;
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}
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return conv_unknown; /* suppress compiler warnings */
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}
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/*PUBLIC API*/
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CONVERT_IMAGERESULT
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convert_quantize_pixels(CONVERT_IMG_ARRAY imagearray,int16 imagewidth,int16 imageheight,int16 maxcolorvalue)
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{
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/*wrapper for colorqnt.cpp we just want to change the pixels, we dont need any info*/
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CONVERT_IMAGERESULT t_result;
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int16 t_dummycolors;
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colorhist_vector t_dummyvector;
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t_result=quantize_colors(imagearray,imagewidth,imageheight,&maxcolorvalue,&t_dummycolors,&t_dummyvector);
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if ( t_dummyvector == (colorhist_vector) 0 )
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return t_result;
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ppm_freecolorhist( t_dummyvector );
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return t_result;
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}
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CONVERT_IMG_INFO *create_img_info()
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{
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return calloc (1,sizeof(CONVERT_IMG_INFO));
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}
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void destroy_img_info(CONVERT_IMG_INFO *p_info)
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{
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if (p_info)
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{
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if (p_info->m_colormap)
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free(p_info->m_colormap);
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free (p_info);
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}
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}
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void copy_img_info(CONVERT_IMG_INFO *p_dest,CONVERT_IMG_INFO *p_origin)
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{
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XP_ASSERT(p_dest);
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XP_ASSERT(p_origin);
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memcpy(p_dest,p_origin,sizeof(CONVERT_IMG_INFO));/*shallow copy!!*/
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}
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/*PUBLIC API*/
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CONVERT_IMAGERESULT convert_stream2image(CONVERT_IMGCONTEXT p_input,CONVERT_IMG_INFO *p_imageinfo,int16 p_numoutputs,char **p_outputfilenames) /*0== OK <0 == user cancel >0 == error*/
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{
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CONVERT_IMGCONTEXT *t_outputparams;
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CONVERT_IMG_INFO *t_imageinfo=NULL;
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CONVERT_IMG_ARRAY t_rowarray=NULL;
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convimgenum t_outputtype;
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CONVERT_IMAGERESULT t_err;
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int16 i;
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XP_ASSERT(p_imageinfo);
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if ((!p_numoutputs)||(!p_imageinfo))
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return CONVERR_INVALIDDEST;
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if ((conv_unknown==p_input.m_imagetype)&&(CONVERT_MEMORY==p_input.m_stream.m_type)) /*dont know what it is and its not a file!*/
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return CONVERR_INVALIDSOURCE;/*reading unknown stream??*/
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t_outputparams=calloc(p_numoutputs,sizeof(CONVERT_IMGCONTEXT));
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if (!t_outputparams)
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return CONVERR_OUTOFMEMORY;
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else if ((conv_unknown==p_input.m_imagetype)&&(CONVERT_FILE==p_input.m_stream.m_type))
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{
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/*read in header info*/
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if (conv_unknown==select_file_type(&p_input))
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return CONVERR_INVALIDSOURCE;/*read file header and tell me what kind it is. also fill info into p_input*/
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}
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t_imageinfo=create_img_info();
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if (conv_bmp==p_input.m_imagetype) /*bitmap*/
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{
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t_err=start_input_bmp(t_imageinfo,&p_input);
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if (t_err==CONV_OK)
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{
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#if 0
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if (t_imageinfo->m_bitsperpixel<=8)/*256Colors GIF ..check colorspace*/
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t_outputtype=conv_png;
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else /* >8 means use JPEG*/
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#endif /*no png support for composer yet*/
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t_outputtype=conv_jpeg;
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for (i=0;i<p_numoutputs;i++)/*need to set defaults for outputs*/
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{
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t_outputparams[i].m_imagetype=t_outputtype;
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t_outputparams[i].m_callbacks=p_input.m_callbacks;
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}
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t_err==finish_input_bmp(t_imageinfo,&p_input,&t_rowarray);
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if (t_err!=CONV_OK)
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{
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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destroy_img_info(t_imageinfo);
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return t_err;
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}
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}
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else
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{
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destroy_img_info(t_imageinfo);
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return t_err;
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}
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}
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/*PICT CRAP HERE AS WELL AS XPM*/
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else
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{
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destroy_img_info(t_imageinfo);
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return CONVERR_INVALIDSOURCE;
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}
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/*callback: this must give us the information on how to convert the image. in case of JPEG, give us the same as parse_switches in the JPEG libraries
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they can change t_defaultoutput if they must and change t_imageinfo for default values i.e. color quantization*/
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if (!p_input.m_callbacks.m_dialogimagecallback)
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{
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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destroy_img_info(t_imageinfo);
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return CONV_CANCEL;
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}
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t_err=(*p_input.m_callbacks.m_dialogimagecallback)(&p_input,t_outputparams,t_imageinfo,p_numoutputs,t_rowarray);
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if (CONV_OK!=t_err)
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{
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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destroy_img_info(t_imageinfo);
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return t_err;
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}
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for (i=0;i<p_numoutputs;i++)
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{
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if (t_outputparams[i].m_stream.m_type!=CONVERT_FILE)
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{
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/* And we're done! */
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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destroy_img_info(t_imageinfo);
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return t_err;
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}
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//copying strings to p_outputfilenames[i]
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if (p_outputfilenames)
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p_outputfilenames[i]=XP_STRDUP(t_outputparams[i].m_filename);
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switch(t_outputparams[i].m_imagetype)
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{
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case conv_jpeg:
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{
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t_err=write_JPEG_file(t_rowarray,&t_outputparams[i],t_imageinfo,p_input.m_callbacks);
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if (t_err!=CONV_OK)
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{
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/* And we're done! */
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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destroy_img_info(t_imageinfo);
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return t_err;
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}
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}
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break;
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#if 0
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case conv_png:
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{
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/*color quantization*/
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t_err=write_PNG_file(t_rowarray,&(t_outputparams[i]),t_imageinfo,p_input.m_callbacks);
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if (t_err!=CONV_OK)
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{
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/* And we're done! */
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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destroy_img_info(t_imageinfo);
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return t_err;
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}
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}
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break;
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#endif //no png support for composer yet
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case conv_plugin: /*plugin*/
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{
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/* to be safe we will clear colormap out out p_outputinfos*/
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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copy_img_info(p_imageinfo,t_imageinfo);/*shallow copy! no colormap*/
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destroy_img_info(t_imageinfo);/*the color map is destroyed here */
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return CONV_OK; /*get rid of compiler warnings*/
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}
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break;
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default:
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{
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/* to be safe we will clear colormap out out p_outputinfos*/
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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copy_img_info(p_imageinfo,t_imageinfo);/*shallow copy! no colormap*/
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destroy_img_info(t_imageinfo);/*the color map is destroyed here */
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return CONVERR_INVALIDDEST;
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}
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break;
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}
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}
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/* to be safe we will clear colormap out out p_outputinfos*/
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clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
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copy_img_info(p_imageinfo,t_imageinfo);/*shallow copy! no colormap*/
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destroy_img_info(t_imageinfo);/*the color map is destroyed here */
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if (p_input.m_callbacks.m_completecallback) //its OK to be null
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t_err=(*p_input.m_callbacks.m_completecallback)(t_outputparams,p_numoutputs,p_input.m_pMWContext);
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else
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t_err=CONV_OK;
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return t_err;
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}
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/*
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this clean function assumes the array has been cleared to 0 before being used.
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*/
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void clean_convert_img_array(CONVERT_IMG_ARRAY array,int16 count)
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{
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int16 i;
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if (!array)
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return;
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for (i=0;i<count;i++)
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if (array[i])
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free(array[i]);
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free(array);
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}
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int16 read_mem_stream(CONVERT_IMG_STREAM *p_stream,void *p_dest,uint16 p_bytecount)
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{
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XP_ASSERT(p_stream);
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if ((p_stream->m_streamsize==0) ||((p_stream->m_currentindex+(DWORD)p_bytecount)<p_stream->m_streamsize))
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{
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memcpy(p_dest,p_stream->m_mem+p_stream->m_currentindex,p_bytecount);
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p_stream->m_currentindex+=p_bytecount;
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return p_bytecount;
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}
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return 0;/*read past end of stream*/
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}
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BYTE read_mem_stream_byte(CONVERT_IMG_STREAM *p_stream)
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{
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XP_ASSERT(p_stream);
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if ((p_stream->m_streamsize==0) ||((p_stream->m_currentindex+1)<p_stream->m_streamsize))
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{
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return p_stream->m_mem[p_stream->m_currentindex++];
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}
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XP_ASSERT(0);
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return 0;/*read past end of stream*/
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}
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int16 read_param(CONVERT_IMG_STREAM *p_input,void *p_dest,uint16 p_bytecount)
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{
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XP_ASSERT(p_input);
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if (CONVERT_MEMORY==p_input->m_type)
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return read_mem_stream(p_input,p_dest,p_bytecount);
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else if (CONVERT_FILE==p_input->m_type)
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return ReadOK(p_input->m_file,p_dest,p_bytecount);
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else
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{
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XP_ASSERT(0);
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return -1;
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}
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}
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BYTE read_param_byte(CONVERT_IMG_STREAM *p_input)
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{
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XP_ASSERT(p_input);
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if (CONVERT_MEMORY==p_input->m_type)
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return read_mem_stream_byte(p_input);
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else if (CONVERT_FILE==p_input->m_type)
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return (BYTE) getc(p_input->m_file);
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else
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{
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XP_ASSERT(0);
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return 0;
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}
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}
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